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Marquise|Natural|GIA

0.50ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 6552378837

Certificate GIA 6552378837

Diamond specifications and retailer prices

From $1,496 NZD
As of November 4, 2026
Save $1,774 NZD (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $5,609 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552378837. Listed at 22 retailers as of November 4, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552378837
Dimensions8.79 × 3.98 × 2.50 mm
L/W Ratio2.21
Girdle conditionFaceted
Culet sizeNone
Top View
8.79 mm3.98 mm0.50 ctE / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552378837
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 62.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $5,609 NZD|Low: $1,247 NZD|High: $5,609 NZD|Avg: $2,383 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 13$1,496 NZD
Retailer 11$1,503 NZD
Retailer 5$1,621 NZD
Retailer 4$1,628 NZD
Retailer 15$1,683 NZD
Retailer 3$1,825 NZD
Retailer 6$1,870 NZD
Retailer 12$1,903 NZD
Retailer 2$2,076 NZD
Retailer 14$2,337 NZD
Retailer 10$2,503 NZD
Retailer 8$2,759 NZD
Retailer 7$2,894 NZD
Retailer 9$3,270 NZD
NZ Jewellers$5,609 NZD

46 data points across 15 retailers

22 retailers$1,496 NZD to $3,270 NZD

Retailer 1
-
$1,046 NZD
Price last confirmed 63 days ago
B+
Retailer 2
-
$1,496 NZD
View
Final sale: no returns
B+
Retailer 3
-
$1,500 NZD
View
Retailer 4
-
$1,503 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$1,605 NZD
View
B+
Retailer 6
-
$1,621 NZD
View
Retailer 7
-
$1,621 NZD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$1,628 NZD
View
B+
Retailer 9
-
$1,637 NZD
View
B+
Retailer 10
-
$1,683 NZD
View
B
Retailer 11
-
$1,825 NZD
View
B
Retailer 12
-
$1,870 NZD
View
B
Retailer 13
-
$1,903 NZD
View
B
Retailer 14
-
$2,010 NZD
View
B
Retailer 15
-
$2,076 NZD
View
Retailer 16
-
$2,337 NZD
View
Price last confirmed 33 days ago
B
Retailer 17
-
$2,361 NZD
View
B
Retailer 18
-
$2,503 NZD
View
B
Retailer 19
-
$2,759 NZD
View
B
Retailer 20
-
$2,894 NZD
View
B
Retailer 21
-
$3,270 NZD
View
Most Expensive
NZ Jewellers
7f37b805-ce11-4328-9561-62bd84e40bac · Nov 5
$5,609 NZD
$3,153 USD
View
Price under review
21 more retailers have this diamond
Prices start from $1,496 NZDSave up to $1,774 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.50ct Marquise
$1,496 NZD